Amend readme.txt

Committed via a GitHub action: https://github.com/Automattic/jetpack/actions/runs/12637017689

Upstream-Ref: Automattic/jetpack@54feb3c

CHANGELOG.md

@@ -5,21 +5,17 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [4.0.6-alpha] - unreleased
-
-This is an alpha version! The changes listed here are not final.
-
+## [4.0.6] - 2025-01-06
 ### Changed
-- Updated package dependencies.
+- Updated package dependencies. [#40798] [#40812]
 
 ## [4.0.5] - 2024-12-16
 ### Changed
 - Updated package dependencies. [#40564]
 
 ## [4.0.4] - 2024-12-09
 ### Changed
-- Updated package dependencies. [#40363]
-- Updated package dependencies. [#40372]
+- Updated package dependencies. [#40363] [#40372]
 
 ## [4.0.3] - 2024-11-26
 ### Changed
@@ -765,7 +761,7 @@ This is an alpha version! The changes listed here are not final.
 
 - Add API endpoints and Jetpack Backup package for managing Help…
 
-[4.0.6-alpha]: https://github.com/Automattic/jetpack-backup/compare/v4.0.5...v4.0.6-alpha
+[4.0.6]: https://github.com/Automattic/jetpack-backup/compare/v4.0.5...v4.0.6
 [4.0.5]: https://github.com/Automattic/jetpack-backup/compare/v4.0.4...v4.0.5
 [4.0.4]: https://github.com/Automattic/jetpack-backup/compare/v4.0.3...v4.0.4
 [4.0.3]: https://github.com/Automattic/jetpack-backup/compare/v4.0.2...v4.0.3

src/class-package-version.php

@@ -16,7 +16,7 @@
  */
 class Package_Version {
 
-	const PACKAGE_VERSION = '4.0.6-alpha';
+	const PACKAGE_VERSION = '4.0.6';
 
 	const PACKAGE_SLUG = 'backup';